Folder for circular work



March 10, l 925. 1,529,103

' c. WINKELMANN FOLDER FOR CIRCULAR WQRK FiledDec. 2, 1919 2Sheets-Sheet 1 .I INVENTOR :m ssgs. flack v Marc h 1 0. 1925.

c. WINKELMAINN FOLDER FOR CIRCULAR WORK Fild DeE. 2, 1919Q'Sheats-Sheet' 2 Patented Mar. 10, 1925. v

UNITED STATES TION OF NEW JERSEY.

nane PATENT caries.

CHARLES WINKELMANN, or NORTH EER E NEW JERSEY, AssiGnoR To: a r IESINGER MANUFACTURING COMPANY, or ELIZABETH, NEW JERsEY, A CORPORA-EoLnER EoR oIRon AR WORK.

Application filed December 2, 1919. Serial No. 3&1,957.

To all whom it may concern:

Be it known that I, CHARLEs VVINKEL- MANN, a citizen of the UnitedStates, residing at North Bergen, in the county of Hudson and State ofNew Jersey, have invented certain new and useful Improvements in Foldersfor Circular lVork, of which the following is aspecification, referencebeing had therein to the accompanying drawings.

This invention relates to folders for sewing machines and its principalobject is to provide means for folding under the edge of a comparativelysmall circular piece of cloth and feeding it to the stitching mechanismof a sewing machine so that it is folded and stitched with precisionentirely around the circle. It is especially adapted for sewing underthe edges. of the circular insignia patches used on the sleeves of theuniforms of soldiers, sailors and members of other organizations.

It comprises in its preferred embodiment a supporting or anchoring plateadapted to be adjustably secured onthe bed-plate of a sewing machine inoperative relation to the stitch-forming mechanism and provided at oneend with a scroll section substantially U-shaped in cross section toform a work turning channel open laterally and with a tongue in theshape of a plate with a curved edge extending into this open side butspaced from all sides of the scroll section. On the under side of thetongue-plate but spaced a suitable distance from the curved edge thereofis a finger forming a guide for the free edge of the folded under marginof the material. The tongue-plate is adjustable relative to the scrollsection to allow for different thicknesses of material.

Referring to the accompanying drawings which illustrate the preferredembodiment of the invention. Fig. 1' is aplan viewshowing a portion ofthe bed-plate of the sewing machine and presser-foot with the folder inoperative relation thereto. Fig. 2 is a front elevation of the folder inoperative position as shown in Fig. 1. Fig. 3 is an end elevation of thesame. Fig. {is a per spective showing a circular piece of material as itis started in the folder. Fig. 5 is a bottom plan view of the folder.,Fig. 6 is a rear elevation of the folder. Figs. 7, 8 and 9 are detailedsectional views on substantially the lines'l 'f, .8--8 and 99, re-

spectively, of Fig. 5. Fig. lO is a perspecusual type of-sewing machinecomprising a bed-plate 1, head 2-, reciprocating needle .tive view of aportion of the throat-plate.

3, Presser-foot 1-, shuttle mechanism .5and

feed mechanism 6. The folder comprises! a comparatively heavybase-plate? adapted to be adjustably secured to the bed-plate 1 by meansof the thumb screw 8 passing through the slot 9 and screwed into thebed-plate.

Formed on the end of the plate-7 is .a scroll section 10 which issubstantially U.shaped in cross section forming a channel and is placedwith the legs extending substantially horizontally with the open sidetothe left as viewed in Fig. 1. It will be'noted from "Fig. 5 that thelower leg 11 commences a short distance from the forward edge of plate7,'gradually increases from 'zero to a maximum a short distance from therear edge of the plate and then runs out into the end of the plate.The-upper leg 12 of the scroll section at the rearof the plate issubstantially the same length as the lower leg and about half waythe-length of the plate 7 lengthens rapidly and curves upwardly and endson the platea short distance from the front edge thereof. The longerportion as at 13 has its edge bentupward slightly tofacilitate theentrance of the work into the guide. This portion is also bent upwardlyas shown in order to give greaterclearance to the work. I

Adjustably secured to the plate 7 by means of the screw 14 is atie-plate '15 having mounted thereon at its opposite end per-- tion thetongue plate, or internal guide 16. This plate is comparatively thin andpreferably has one edge 17 thereof formed on substantially the arc of acircle with its centersubstantially in line with the portion l8of therear edge of the plate so that the rear end of thecurve is substantiallynormal to this portion. It is, however, not 'neces'sarythat this curvebeformed on the screw 14:, plate 15 and with it tongue-plate 16 maybeadjusted about the. screw lt as a pi-votwhichswill move the rear portionof the curved edgeof the plate 16 adjacent-the Secured to the tie-plateon-the under side thereof, is an edge-guide 20 which is formed of apiece of sheet metal'withaarectangnlar section 21 at one end and anarrow finger Y 22 extending from one edgethereofpand bent substantiallyat right angles. thereto as :shown in FigsJS and"? to '9. It is securedto the plate '15 by means-of alscrew 23 extending through therectangular portion 21 1 preferably in such a manner that the verti-"cal finger portion 22 extends substantially parallel-with the bottom ofthe -U -'sha ped scroll-sect'ion but is spaced away from thecurvecl edge17 any suitable distance, as

desired. The top portion'of'the finger 22'is bentl laterally LU 2 h to"fill in the space for'inedlat the junction of the plates '15 and1i61-iminediately under the forward edgeof t'lielupper leg 12 of thescroll-section.

It is desirable that the work after being 'ufolded be fed to the needleat substantially the top surface of the throat-plate 25. Thisth-roat-plate is therefore formed with a recess or depression -25- asshown in Figs. 10

and 11,, into which the finger 22 and the lowerleg 11 are 'adaptedtoextend to allow the lower-rear edges of the plates 7- and16 tobe-positionedadjacent the top of the throat-plate. This recess ordepression is located immediately in front of the needleopening '26 ofthe throat-plate. {Iniinediately to therearof the needle opening is afeed-dog opening 27 through which the feed-dog 28 is adaptedto-op'erate; This i'eed5dog is made with comparativelyfew.

teeth so 'asto. readily. release the-Work in that it'is not fed straightbut comes off the curvature. It-will be noted that the presserfoot hasone toe removedin order that the attachment may :be ip laced 'so that asthe 29 is placedwithintheiscroll section with'tlie Presser-footie andneedle 3 raised and is moved laterally until its marginal portion withinthe scroll section :is .foldedunder and the edge tliereofcontacts :withthe edgeguidelor .finger22 under .the 'plate 16. The operator thenpressesf-her -jfinger on substantially the center .ofthe circularpiece29 at about G as shown i-nF-ig. e which .ison the plate 16 and adjacenttherear 'edge of' the latter and starts themachi-ne. the 'rm'ater-ialcomes Loutithe rear end of the scroll-section folded and is immediatelystitched adjacent --its-nfo1ded Wedge w and is king" a plate providedwith ascroll section The edge of drawn through by the feed-dog. Thewhole piece turns about the-end o'f tlie operators wfinger a sa pivot,which, as stated above,

substantially at-its center, until the-entire circumference is folded,and stitched. It will be noted that inthis-folding o.pei=ation theU-shaped scroll-section folds the mar- ;gi-n;al portion {of the piecearound the curved edge 17 of the plate 16, which particularlyfacilitatesthis-operation in the folding of curved or circular work. Theedge of the material as it passes through the folder abuts against theforward portion 10; of

the scroll-section, as shown inFig. 4, ;and is gradually foldedundergtheedge 17. In

tion I be stitched closely adjacent; the; folded edge thereof and'inorder to Clo-this it is necessary that the folder'be so placed withrespect to the needle that the stitching oceurs iminediatelyafterfthe-work leaves the rear or delivery ends ofthe scroll-section andthe curved edge 17 clearly shown in Fig. 1. v

oft-he plate 16, as

, Having thus set fort-hthe nature of the invention, what clann hereinis" -1." The COlHbllTELtlOll'Wltll a sewing inachine throat-plate havinga needle-hole and a depressioirin front of said needle.-'hole,.of

a curved edge extending between the legs of the Scroll-section andspaced therefrom, ,and edge-guiding means on'the lowen'side of theguide-plateadjacent the curved edge.

thereof.

tion placed on its side, the lower leg of the v V-;scrollincreasingfrom.zeroatitsfront end feed dog in a lateraldirectiondue to its,-

curved edge extending-between the legs of the'scroll-secti'on and spacedtherefrom.

The combination with a sewing ina- -'chinehaving stitch-forining andfeeding mechanisms, of a'folder comprising a plate provided with i ascroll-section substantially Usshaped in cross-section and placed on its.side, and a guide-plate having a curved edge extending between the legs5 of the scroll-sec- .t-ion andspaced therefrom, said guide-plate alsohaving a work-supportingsurface portiondisposed at the side of thesewing point order that the piece should'be'properly" iinished it-isimportant that the folded porand substantially in a line through the sew1 ing point normal to thedirecti'on .of' feed.

it. f A folder for sewing machines, compristhe machine and provided witha.scroll-section substantially U-shaped in cross-section and placed onits side, a guide-plate formed with a CUIVQd edge extending between thelegs of the scroll-section and spaced therefrom, an edge-guide on theunder side of the guide-plate adjacent the curved edge thereof, andmeans for securing the folder with the rear or delivery ends of thescrollsection and curved guiding edgev adjacent the needle opening.

6. A sewing machine having stitching mechanism including a needle, and ahemming device comprising a flat plate having an outwardly arched,circular edge, on which plate fabric is adapted to rest and to be turnedwith the edge of the fabric extending over said curved edge, and afolder arranged to guide the edge of the fabric around said curved edgewhereby the fabric may be turned around on said plate while the edgethereof is folded around the curved edge of said plate said needle beingdisposed approximately in the line of said circular edge.

7. A sewing machine having stitching mechanism including a needle, and aheinining device comprising a flat plate having an outwardly arched,circular edge terminating adjacent the sewing needle, on which platefabric is adapted to rest and to be turned with the edge of the fabricextending over said curved edge, and a folder arranged to guide the edgeof the fabric around said curved edge whereby the fabric may be turnedaround on said plate while the edge thereof isfolded around the curvededge of said plate.

8. A sewing machine having stitching mechanism including a needle, and aheinming device comprising a flat plate having an outwardly arched,circular edge terminat ing adjacent the sewing needle, on which platefabric is adapted to rest and to be turned with the edge of the fabricextending over said curved edge, and a folder ar ranged to guide theedge of the fabric around said curved edge whereby the fabric may beturned around on said plate while the edge thereof is folded around thecurved edge of said plate, said'folder having a wall opposed to saidcurved edge and extending tangentially relatively to said curved edge.

9. A sewing machine having stitching mechanism including a needle, and ahemming device comprising a flat platehaving an outwardly arched,circular edge terminating adjacent the sewing needle, on which platefabric is adapted to rest and to be turned with the edge of thefabricextending over said curved edge, and a' folder ar ranged to guidetheedge of the fabric around and under said curved edge whereby the fabricmay be turned around on said plate while the edge thereof is foldedaround said curved edge, and a gauge under said plate against which theturned edge of the fabric is adapted to; engage.

10. A sewing machine comprising sewing means and a hemining device,including a fabric plate having a curved edge leading toward the sewingmeans, a folder adapted to guide the edge of the fabric around and undersaid curved edge, and a gauge or stop under said plate having anabutting surface crossing the arc of said curved edge.

11. A sewing machine comprising sewing meansincluding a needle and aneedle plate having a needle aperture, and a groove in ad Vance of theneedle aperture, a plate having a curved edge leading toward said needleaperture, a folder adapted to guide the edge of the fabric around andunder said curved edge, said folder extending into the groove in theneedle plate, and" a gauge or stop for the edge of the-fabric arrangedbelow said curved edge and extending into said groove in the needleplate.

12. A sewing machine comprising stitohing means including an aperturedneedlev plate, a sewing needle operating in said aperture, said needleplate having an aperture for the feed dog arranged near the needleaperture, a'feed dog movable therein,

a fabric plate having an outwardly arched curved edge leading toward andterminating ust in advance of the needle aperture of the needle plate,on which fabric plate fabric is adapted to rest and to be turned withthe edge of the fabric extending over said curved edge, a folderarranged to guide the edge of the fabric around said curved edge,

and a presser foot near said needle, having a claw extending inside'theare of the curved edge of said fabric plate.

In testimony whereof, I have signed my name to this specification. Y

CHARLES WINKELMANN.

